1Heat oven to 350°F. In large bowl, mix brown sugar, butter, vanilla and eggs with spoon. Stir in flour, oats, baking powder and baking soda. Stir in cereal and peanuts.
2Shape dough by rounded teaspoonfuls into balls. On ungreased cookie sheets, place balls about 2 inches apart. Flatten slightly with greased bottom of glass dipped in sugar.
3Bake 10 to 12 minutes or until set. Cool 1 minute; remove from cookie sheets to cooling racks.